Open AccessDevelopment and evaluation of aerogel-filled BMI sandwich panels for thermal barrier applications
Author(s) -
Sunil Chandrakant Joshi,
Abdullah Azhar Sheikh,
Arthanareswaran Dineshkumar,
Yong Zhao
Publication year - 2016
Publication title -
aims materials science
Language(s) - English
Resource type - Journals
eISSN - 2372-0484
pISSN - 2372-0468
DOI - 10.3934/matersci.2016.3.938
Subject(s) - aerogel , materials science , coating , composite material , sandwich panel , sandwich structured composite , thermal insulation , silicone , fabrication , electromagnetic shielding , honeycomb , heat transfer , core (optical fiber) , thermal , layer (electronics) , medicine , alternative medicine , physics , pathology , meteorology , thermodynamics
This study details a fabrication methodology envisaged to manufacture Glass/BMI honeycomb core aerogel-filled sandwich panels. Silica aerogel granules are used as core fillers to provide thermal insulation properties with little weight increase. Experimental heat transfer studies are conducted on these panels to study the temperature distribution between their two surfaces. Numerical studies are also carried out to validate the results. Despite exhibiting good thermal shielding capabilities, the Glass/BMI sandwich panels are found to oxidise at 180 ºC if exposed directly to heat. In order to increase the temperature bearing capacity and the operating temperature range for these panels, a way of coating them from outside with high temperature spray paint was tried. With a silicone-based coating, the temperature sustainability of these sandwich panels is found to increase to 350 ºC. This proved the effectiveness of the formed manufacturing process, selected high temperature coating, the coating method as well as the envisaged sandwich panel concept